<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #leo {
            background: orange;
            width: 200px;
            height: 500px;
        }

        #span {
            width: 400px;
            height: 400px;
            background: green;
        }
    </style>
</head>
<body>
<div id="leo">
    123456
</div>
<span id="span">abc</span>
</body>
</html>